Letter-file.



No. 826,243. Q PATENTED JULY 1'7, 1906. G. A. GRUNBWALD.

LETTER FILE.

APPLICATION FILED SEPT. 16,1905. v

- 3 SHEETS-SHEET 1 Fly-'1 13 6 /02 g 4 ma M5 asses i v [Even/.07.- Q MW? Ila 5 4 find 826,243. PATBNTED JULY 17, 1906.

O. A. GRUNEWALD. LETTER FILE. APPLICATION FILED SEPT.16,1905

3 SEEETS-SHEET 2 No. 826,243. PATENTED-JULY'IV,190G.

4 o. A'. GRUNEWALD.

LETTER FILE.

APPLICATION FILED SEPT.16,1905.

3 SHBETS-SHEET 3.

CARL ALOYS GRUNEl VALD, OF HANOVER, GERMANY.

LET'E"ER FELE.

Specification of Letters Patent.

Application flied September 16, 1905. Serial No. 27%,760.

To all whom 2 TH/(LZ/ concern.-

Be it known that I, CARL ALors GRJNE- l u'A'Ln, a citizen of Germany, residing at Hano- 'er, Germany, have invented new andusetul lmprovements in Letter-Files, of which the following is a specification.

This invention relates to file for letters and other papers, which will hold the same securely and permit their rea ly insertion, inspection, and removal.

1n the accompanying drawings, Figure 1 is a perspective view of my improved letterfile. Fig. 2 is a similar view with one of the I side ilates )artl drawn out. Fi 3 is a plan, partly in section, of part of the file; Fig. 4, a section through one of the end plates. Fig. 5 is a perspective view of the file, show ing one of the side plates entirely withdrawn. Fig. 6 is a perspective view of a modification. Fig. 7 is a section through the heel; of a further modification. Fig. 8 is a pespective view of the case for inclosing the file; Fig. 9, perspective view of a further modification of the file; Fig. 10, a section through the end plate thereof; Fig. 11, a plan of Fig. 10 Figs. 12 and 13 are end view; thereof, showing the side plate in its innermost and outermost positions; and Fig. 14, a' cross-section of the modification illustrated in Fig. 9.

The numerals 100 indicate the hinged cover or" the file, and 101 is the back. To the back 101 are secured a pair of end plates 1, from the top of which extend inwardly rails or flanges 2, having perforations 8. A. set of removable leaves 3, between which the letters and other papers are adapted to be confined, are notched or providedat each edge with a lower projection 4, adapted to engage beneath fian e The leaves 3 are thus secured to the back insuch a manner that they cannot be lifted off the same, while lateral movement is permitted. To clamp the leaves 3 to the back, I provide the latter with a movable longitudinal slide or partition and with apair of side plates, of which either one or both may be removable. The slide 5 is notched at its ends to form projections that extend beneath flanges 2 and is provided with springs 6, that project over flanges 2.

Pins 7, depending from springs 6 and ada ted to engage perforations 8, permit the Sll( e to be locked to the end plate 1 at various positions. The ileaves 3 are adapted to be clamped between slide 5 and either one of a pair of parallel side plates 9 and 10, with which in l r l l I back is provided. To facilitate the insertion and removal of the papers when the file is already well filled, either one or both of these plates is made movable. As illustrated, plate 10 is slidably secured to the back by means of arms 11, that-engage end plates 1. Hooks 14 15 on parts 1 11, respectively, limit the outward movement ofplate 10. A top spring forms a continuation of flange 2 when plate 10 is drawn out, and thus locks to the plate. The springs 12 by frictionally engaging flanges 2 also serve to hold the plate 10 in its intermediate positions. To side plates 9 and 10 may be hinged covers 17, creased to form feet 102, that rest upon covers 100 and support the leaves 3 and the inelosod letters in their open position.

Fig. 6 shows the leaves 3 .inclosed within a. separate cover 16. The arms 11 are made" resilient, so that they may from plates 1 and permit the side plate 10 to be disengaged:

12, secured to plate 10,

the papers be entirely disconnected prior to the removal for the hooks and hold the slide in a vertical position. One of the side plates 9 lO-viz., the plate 9-is here omitted. The end plates 1 are provided with springs 20, having bent ends or hooks If the side plate 10 is en tirely pushed in, the hooks 21 engage. the outer side of such plate, and thus hold it in position. To limit the movement of the side plate, it is provided with a slotted flange 23, engaged by a pin 22 of spring 20. The partition 5 is provided with a shoulder 103,While the plate 10 is provided with a similar shoulder 104;, which is, however, out alinenient with shoulder 103. These shoulders constitute J i that serve to securely clamp the papers bctweenslide and side plate. The file when closed may be placed in a suitable dust-proof casing 18. (Illustrated in Fig. 8.)

i What I claim is- 1. A letter-file provided with a back, a pair of hinged covers, a pair of end plates onthe back, a slidable side plate, means for limiting siid- Beneath such flanges. there are secured to the end walls corrugated plates 24, that constitute guides l upright of horizontal "the outward movement of said plate, a slide, and means for locking the slide to the end plates, substantially as specified,

- -2 A letter-file provided with a back, a pair offend plates having perforated flanges, a side and. pins on the slide adapted plates Slide,

flanges, substantially as speciee e .fie

" 3'5 1;.- letter-file provided with a back, a pair assigns plates, flanges on the end plates, leaves llaving'pro'ections adapted to en age the ifflanges, a side, and means for 100 "ng the to "'5. A letter-file )rovided with a baek,'a pair of end plates a s ide, means for locking the lislid, a movable side plate, hooks for limiting "the outward movement of said plate, and .flmeans for holding said plate in intermediate as; positions, substantially I as specified.

I "6, A lette -file provided with a back, a pair set 5,243

of flanged end plates, a notched slide adapted to engage the flanged end plates, means for locking theslide to the end plates, a slidable side plate, and means for limitin the moveipent of the side plate, substantia 1y as specied.

7 A letter-file provided with a back, a air of flanged end plates, a sideplate, a note ed slide adapted to engage the flan ed end plates, means for locking the slide to t e end plates,

notched leaves engaging the end plates, and a the leaves, substantially as co er .inoloslng specified.

8. A letter-file provided with aback, a slide, a pain of end plates, aside plate, means for locking the slide to the end plates, ashoulder on the slide, and a shoulder on the side plate which is out of alinement with the ghpiulder on the slide, substantially as speci- Signed by me at Diisseldorf, Germany, this 1st day of September, 1905. N

CARL ALOYS GRUNEWALD. Witnesses:

WILLIAM Essnnwnm, HANS FRIEDRICH. 

